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Installing a Metal Roof over Old Shingles: Pros and Cons

  • Transcript

    LESLIE: Now, we’re going to help Daniel in Georgia with a roofing situation. What’s going on at your money pit?

    DANIEL: Oh, I’ve got a question about roofing. I’m going to want to redo my roof here in the next year or so; shingles are starting to get brittle and I’m interested in the metal roof and wondering – do I have to strip all the old shingles and tar paper off before I put the metal roof on and then also, generally, what do you feel about the metal roofs? Are they as good or better than or not quite as good as regular shingles?

    TOM: Well, they’re far better than regular shingles.

    LESLIE: (overlapping voices) They’re great.

    TOM: They’re also far more expensive. It’s a …

    LESLIE: And far more durable. They’re going to last …

    TOM: Yeah.

    LESLIE: … a lot longer.

    TOM: Mm-hmm.

    LESLIE: So that balances the cost out.

    TOM: And the painting on metal roof today has the added ability of being able to reflect some of the heat back out of the house, too. They’ve got new paint coatings now so I think it’s a good product.

    LESLIE: Mm-hmm.

    TOM: In terms of whether or not you remove those shingles, you don’t have to but …

    LESLIE: Well, that’s why the metal roof is such like an eco-friendly product, because you don’t have to get rid of all of that stuff to the landfills.

    TOM: Right. But now that I said that, I would tell you that if it was my house, I probably would and the reason is I don’t want to have all those old shingles under the roof. I don’t want to have to deal with the edge, where the shingle overhangs the fascia …

    DANIEL: Alright.

    TOM: … and then have the metal lip right above that. I just don’t like the idea of having, you know, three-quarters of an inch to an inch-and-a-half of shingle mound under there. I would personally rather take it all off but in terms of the manufacturer, they absolutely say you don’t have to do that; so it’s totally up to you.

    DANIEL: Oh, OK. I see. That helps out a lot. I’ll have to try to balance the man hours and the elbow grease that I’d have to put in to strip all the shingles off and that type of stuff.

    LESLIE: And the cost, possibly, to dispose of them.

    TOM: Yeah, absolutely. There’s a good website for the Metal Roofing Association, which has got good information on this. I think it’s MetalRoofing.com.

    DANIEL: OK. Well, I’ll take a look at that and I appreciate all the information.

    TOM: You’re welcome. Thanks so much for calling us at 888-MONEY-PIT.

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